The station sent reporter Shellie Bailey-Shah to the stores to return Halloween products that went on sale after the holiday passed.

Target and Fred Meyer had no problem refunding her returns for the full amount, despite their lowered retail value.

But Walmart's cashier tripped up trying to scan the gift receipts and later told the reporter the store's computer system "always has trouble with them" — a statement Walmart has since refuted.

In the end, Bailey-Shah walked out with only $79 of the $92 she originally paid for.

This isn't the first time Walmart has kicked up controversy over its gift return practices. In May, a CBS affiliate in Sacramento, Calif. went undercover with a hidden camera to show the retailer shortchanging customers on gift receipt returns.

A California consumer attorney has also launched a class action lawsuit against the retailer, KATU reports, asking it to turn over records for returns over the last few years.